Sulky-plow



(No Model.) 2 Sheets-Sheet 2 V N. SWIOKARD.

SULKYPLOW No. 263,669. Patented Aug. 29, 1882.

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INVENTOR 170M ymara/r64,

@ ATTORNEYS N PETERS, PhclO-l'flhognpher. Wanhinglon. D. a

UNITED STATES ATEiwr rrion.

NOAH SWIOKARD, OFGLARINDA, Assrenon or ONE-HALF TO HENRY r.

. SIMMONS, OF OSGEOLA, IOWA.

PLOW.

SPEG IFICATIO N forming part of Letters Patent No. 263,669, dated August .29, 1882 invented a new and valuable Improvement in Snlky-Plows; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same,reference being had to the annexed drawings, making apart of this specification, and to the letters and figures of reference marked thereon. i

Figure l of the drawings is a representation of a top "iew. Fig. 2 is a top view having the upper, plate removed. Fig. 3 is a side view. Fig. 4 is a vertical sectional view. Fig. 5 is a cross-section, and Fig.- 6 is a bottom view.

This invention has relation to coupling devices for connecting the beams of plows and cnltivators to the draft-frames and it consists in the construction and novel arrangement of a sectional yoke-plate, the laterally-movin g center connected to the front part of the yoke, the double bearing-plates to which the beam is connected, and the parallel-moving link bars or connections pivoted to the yoke and center plates, all as hereinafter set forth.

The object ofthis invention is to provide a simple means for obviating the lateral strain on the wheels of the draft-frame, and to keep the beam direct in its movement, and to control the plow or shovel in such a manner as to prevent a rocking movement thereof.

In the accompanying drawings, the letter A designates the yoke, which consists of two sections or plates, 13 and 0, connected by par allel-moving link bars or connections I), and supporting'the broad center plate,E, carrying the beam, and pivoted to the rear section or plate, (J, of the yoke. The front yoke-plate, B, is connected in any ordinary manner to the axle or other bar of the draft-frame. Its rear edge is straight, and is provided with a bearing, a, for the rear section or plate, 0,.the front edge of which engages said bearings. Usually these platesare rabbeted, so that the rear edge of the front plate will overlap the front edge of the rear plate. These plates are connected Application filed May 3, 1882. (No model.)

I above and below by link bars or connections D, which are arranged on each side ofithe center, and are connected to said plates by pivot-bolts F. Recesses b are provided in the upbars, so that they will not obstruct the bearing-surface formed by the two plates on which the center plate, E, rests. A central aperture or bearing, 0, is provided for the pivotal hearing at and the pivot-bolt 6, whereby the center plate, E, is connected to the rear section or plate, 0, of the yoke, as shown inthe drawings. The pivotal bearing-plate E is made broad, and is usually circular in form, having at its center a pivotal projection, d, which engages a bearing in the plate 0, and a pivot-bolt, e, which passes through the plate G and serves to connect the two plates together. The rear edge of the center plate, E, is provided with a hook-bearin g, g, which engages the circular rear edge, It, of the rear yoke-plate, G.

H indicates the plow-beam, which is firmly connected to the center plate, E, by the clip-bar k and the bolts l, the heads at of which are seated in recess-bearin gs z in the under surface of the plate. When the center plate is connected to the rear portion of the yoke by means of its pivot-bolt a stron gcoupling is formed, and as the broad center plate engages the yoke-surface no rocking movement is permitted to the beam which is rigidly secured thereto. The center plate being pivoted to the rear or parallel-moving section of the yoke, the beam is allowed to maintain its direct line uninfiuenced by the lateral swaying of the draft-frame. In this manner the draft-frame and wheels are relieved from lateral strain, and the plows or shovels are allowed to move steadily and directly forward without describing curves, and are prevented from rocking. I

claim, and desire to secure by Letters Patent, v

1. In a coupling attachment for wheel plows and 'cultivators, the sectional yoke having a laterally-moving rear section bearing the center plate which carries the beam, substantially as specified.

per surfaces of these plates to receive the link Having described this invention, what I 2. In acouplingattaehment for wheel plows In testimonythat I claim the above I have and cultivators, the yoke-plates B and 0, conhereunto subscribed my name in the presence nested by parallel-movinglink bars or connecof two witnesses.

tions D, and the broad center plate, E, carrying NOAH SWIOKARD. 5 the beam and connected to the rear plate, 0, of Witnesses:

the yoke bya pivot-bolt, substantially as speci- W. E. CLARK,

fied. W. J. CALHOUN. 

